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The light bulb sign is best observed on an AP radiograph of the shoulder. [5] Key features include: Rounded humeral head: The humeral head appears symmetrically rounded, resembling a light bulb due to internal rotation. Loss of normal glenohumeral overlap: The humeral head is posteriorly displaced, disrupting the alignment with the glenoid cavity.
The briefest electric shock type of paresthesia can be caused by tweaking the ulnar nerve near the elbow; this phenomenon is colloquially known as bumping one's "funny bone". Similar brief shocks can be experienced when any other nerve is tweaked (e.g. a pinched neck nerve may cause a brief shock-like paresthesia toward the scalp).
The sensation can feel like it goes up or down the spine. It is painful for some, although others might simply feel strange sensations. [1] In many people, it is elicited by bending the head forward. [2] It can also be evoked when a practitioner pounds on the cervical spine while the neck is flexed; this is caused by involvement of the ...
An electrical injury, (electric injury) or electrical shock (electric shock) is damage sustained to the skin or internal organs on direct contact with an electric current. [ 2 ] [ 3 ] The injury depends on the density of the current , tissue resistance and duration of contact. [ 4 ]
One of the children injured in the Oct. 22 incident that killed Nate Davenport told police about noticing broken lights within the fountain before feeling an electrical shock, the report said.
This nerve can cause an electric shock-like sensation by striking the medial epicondyle of the humerus posteriorly, or inferiorly with the elbow flexed. The ulnar nerve is trapped between the bone and the overlying skin at this point. This is commonly referred to as bumping one's "funny bone". [2]
Orifice entry: may occur if lightning strike occurs near the head entering eyes, ears and mouth to flow internally; Side splash: lightning jumps from the location of primary strike to a nearby person; Contact injury: injury that occurs when a person is touching an object on the pathway of lightning
If the person has myelopathy, there will be slow abduction and flexion of the fingers on the ulnar side. The degree of loss of sensation may be different on both upper limbs. [2] Lhermitte sign is performed by asking a person to gently extend the neck. Those with cervical myelopathy will produce a feeling of electrical shock down the spine or arms.